The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 19EZ9 # Created Mon Apr 28 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 3.16y # First observation: 2016/01/15 # Last observation: 2019/03/15 Preliminary a, adot, b, bdot, g, gdot: -0.000022 0.040797 0.000002 -0.001166 0.033421 0.000000 # Chi-squared of fit: 15.49 DOF: 52 RMS: 0.13 # Min/Max residuals: -0.33 0.28 # Exact a, adot, b, bdot, g, gdot: 1.809492E-05 4.017189E-02 -4.633432E-07 -1.132155E-03 3.334966E-02 -5.081974E-03 # Covariance matrix: 2.4221E-13 1.7924E-12 7.4005E-15 -6.1515E-14 6.7210E-13 1.7119E-11 1.7924E-12 1.8870E-10 6.7518E-13 -6.3863E-12 3.9985E-11 1.8183E-09 7.4005E-15 6.7518E-13 7.0121E-14 -4.6475E-14 1.4474E-13 6.5047E-12 -6.1515E-14 -6.3863E-12 -4.6475E-14 2.4792E-13 -1.3535E-12 -6.1546E-11 6.7210E-13 3.9985E-11 1.4474E-13 -1.3535E-12 8.9995E-12 3.8465E-10 1.7119E-11 1.8183E-09 6.5047E-12 -6.1546E-11 3.8465E-10 1.7524E-08 # lat0 lon0 xBary yBary zBary JD0 -12.049151 138.482359 0.404352 -0.186961 -0.876817 2457402.899639 # Heliocentric elements and errors Epoch: 2457400.5000 = 2016/01/13 Mean Anomaly: 326.77984 +/- 0.423 Argument of Peri: 311.41874 +/- 0.783 Long of Asc Node: 236.23433 +/- 0.006 Inclination: 11.82673 +/- 0.000 Eccentricity: 0.20945773 +/- 0.0025 Semi-Major Axis: 36.65236957 +/- 0.0242 Time of Perihelion: 2464879.6235 +/- 95.1 Perihelion: 28.97524756 +/- 0.0921 Aphelion: 44.32949159 +/- 0.0948 Period (y) 221.9020 +/- 0.22 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.36428047 +/- 0.0020 Ecliptic Y 20.33301250 +/- 0.0018 Ecliptic Z -6.25950226 +/- 0.0006 Ecliptic XDOT -0.00186671 +/- 0.0000 Ecliptic YDOT -0.00275958 +/- 0.0000 Ecliptic ZDOT -0.00000378 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.86703430 +/- 0.0018 Geocenter to KBO 29.98531606 +/- 0.0027 # Hcoef: 9.19
The following table shows the complete astrometric record for 19EZ9. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (19EZ9) followed by the observatory code and reference code for the source of the astrometry.
2016 01 15.39885 09 08 50.88 +03 48 12.2 23.9z 19EZ9 T09 C~8nhj 2016 01 15.41109 09 08 50.80 +03 48 12.5 24.0z 19EZ9 T09 C~8nhj 2016 01 15.42726 09 08 50.70 +03 48 12.7 24.0z 19EZ9 T09 C~8nhj 2016 01 15.44092 09 08 50.62 +03 48 13.2 23.3z 19EZ9 T09 C~8nhj 2016 02 06.46747 09 06 35.99 +03 56 15.7 23.7i 19EZ9 T09 C~8nhj 2016 02 06.47289 09 06 35.96 +03 56 15.9 24.0i 19EZ9 T09 C~8nhj 2016 02 06.48099 09 06 35.91 +03 56 16.2 24.4i 19EZ9 T09 C~8nhj 2016 02 08.42016 09 06 23.78 +03 57 10.4 24.4r 19EZ9 T09 C~8nhj 2016 02 08.43327 09 06 23.72 +03 57 10.9 24.2r 19EZ9 T09 C~8nhj 2016 02 08.46846 09 06 23.47 +03 57 11.8 23.7r 19EZ9 T09 C~8nhj 2016 02 08.52599 09 06 23.12 +03 57 13.4 24.1r 19EZ9 T09 C~8nhj 2016 02 08.52811 09 06 23.09 +03 57 13.6 24.1r 19EZ9 T09 C~8nhj 2016 02 08.53022 09 06 23.09 +03 57 13.6 24.2r 19EZ9 T09 C~8nhj 2016 03 07.34814 09 03 42.68 +04 12 14.3 24.3g 19EZ9 T09 C~8nhj 2016 03 07.37085 09 03 42.57 +04 12 15.5 24.9g 19EZ9 T09 C~8nhj 2016 03 07.40007 09 03 42.42 +04 12 16.3 24.5g 19EZ9 T09 C~8nhj 2016 03 07.40219 09 03 42.42 +04 12 16.5 24.8g 19EZ9 T09 C~8nhj 2016 03 07.41935 09 03 42.32 +04 12 16.8 24.5g 19EZ9 T09 C~8nhj 2016 03 12.30177 09 03 18.90 +04 15 06.2 23.8z 19EZ9 T09 C~8nhj 2016 03 12.33220 09 03 18.75 +04 15 07.4 23.4z 19EZ9 T09 C~8nhj 2016 03 12.34609 09 03 18.69 +04 15 07.7 24.2z 19EZ9 T09 C~8nhj 2016 03 12.35996 09 03 18.64 +04 15 08.4 23.6z 19EZ9 T09 C~8nhj 2016 03 12.37386 09 03 18.55 +04 15 08.9 23.8z 19EZ9 T09 C~8nhj 2019 03 08.30232 09 30 12.54 +01 54 30.4 24.0r 19EZ9 T09 C~8nhj 2019 03 08.32343 09 30 12.43 +01 54 31.1 23.8r 19EZ9 T09 C~8nhj 2019 03 08.34464 09 30 12.32 +01 54 31.9 24.0r 19EZ9 T09 C~8nhj 2019 03 15.27391 09 29 36.39 +01 58 55.0 23.1y 19EZ9 T09 C~8nhj 2019 03 15.29808 09 29 36.27 +01 58 55.7 23.7y 19EZ9 T09 C~8nhj 2019 03 15.31422 09 29 36.16 +01 58 56.2 23.8y 19EZ9 T09 C~8nhj
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.20 0.00 -0.02
2 0.0000 -1.23 0.05 -0.07 0.05
3 0.0001 -2.72 -0.01 -0.33 -0.02
4 0.0001 -4.01 -0.09 -0.21 0.26
5 0.0604 -2071.14 0.01 -140.44 -0.19
6 0.0604 -2071.63 0.06 -140.39 -0.12
7 0.0605 -2072.43 0.06 -140.32 -0.04
8 0.0658 -2261.88 -0.14 -142.65 -0.13
9 0.0658 -2262.88 0.15 -142.44 0.09
10 0.0659 -2266.72 -0.19 -142.69 -0.12
11 0.0661 -2272.20 0.03 -142.72 -0.08
12 0.0661 -2272.69 -0.25 -142.67 -0.02
13 0.0661 -2272.69 -0.04 -142.67 -0.02
14 0.1422 -4832.81 -0.03 3.51 -0.14
15 0.1423 -4834.74 -0.06 4.17 0.28
16 0.1424 -4837.12 -0.01 4.26 0.07
17 0.1424 -4837.18 0.11 4.46 0.24
18 0.1424 -4838.70 0.01 4.30 -0.09
19 0.1558 -5223.77 0.07 62.04 -0.09
20 0.1559 -5226.27 -0.07 62.52 0.02
21 0.1559 -5227.22 0.06 62.54 -0.13
22 0.1560 -5228.14 0.22 62.99 0.15
23 0.1560 -5229.57 -0.14 63.07 0.05
24 3.1428 20429.53 -0.08 -729.50 0.13
25 3.1428 20427.73 0.05 -729.33 0.07
26 3.1429 20425.89 0.16 -729.07 0.10
27 3.1619 19827.20 0.02 -640.96 0.11
28 3.1619 19825.26 0.12 -640.84 -0.09
29 3.1620 19823.52 -0.26 -640.86 -0.33
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
19EZ9 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.491 36.535 36.453 ecceobj 0.203 0.199 0.207 incobj 11.805 11.806 11.804 qmin 27.926 27.944 27.877 qmax 45.485 45.454 45.512 amean 36.475 36.475 36.475 amin 36.114 36.127 36.104 amax 36.877 36.886 36.904 emean 0.197 0.197 0.197 emin 0.144 0.148 0.143 emax 0.235 0.233 0.235 imean 14.008 13.843 14.229 imin 11.494 11.297 11.910 imax 16.214 15.958 16.480 excite_mean 0.313 0.311 0.316 fracstop 1.000 1.000 1.000 cjmean 2.918 2.919 2.916 libcent 0 179.9 181.2 181.6 libamp 0 62.0 60.7 71.5 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 271.7 271.5 272.0 kozaiamp 42.2 39.3 47.0